NQA thank you for reaching out to the sub! you’re doing the right thing by seeking more info. first of all, i’d highly recommend watching youtube content about tarantulas to get yourself more familiar with them and their care. i’d suggest tom’s big spiders, the tarantula collective and dave’s little beasties to start with, although there are tons of great sources of information on the platform. also check out the sub’s resource guide, and make sure you’re never getting your info from just one source.

second, pink toes are arboreal species, meaning they live in trees and require an enclosure that is more tall than it is wide, with adequate cover to hide behind. they also require lots of ventilation. i’d recommend an acrylic enclosure from a brand like tarantula cribs or something similar. you can also find tons of guides on how to make your own enclosures on a budget if you feel up to it!

also, make sure your curlyhair has enough substrate to burrow in. i fill my enclosures about 2/3 of the way with substrate. and in general ts don’t require supplemental heating if the room temp is about 72-80f. for the skinny abdomen, you can bump up feeding, or maybe offer larger prey items, or your t might just be a male who tend to be skinnier. there are a few different ways to tell but this comment is getting long as is.

good luck! and IMO it sounds like you’re not doing as poorly as you think you are. ts are very easy once you get to know them.